Light-by-light scattering contributions to positronium decay rates

Gregory S. Adkins, Richard N. Fell, and J. Sapirstein
Phys. Rev. A 63, 032511 – Published 9 February 2001
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Abstract

We evaluate the contributions of final-state light-by-light scattering to the parapositronium and orthopositronium decay rates. Our results are 1.29392(4) for parapositronium and 0.350(4) for orthopositronium in units of (α/π)2 times the respective lowest-order rates.

  • Received 21 September 2000

DOI:https://doi.org/10.1103/PhysRevA.63.032511

©2001 American Physical Society

Authors & Affiliations

Gregory S. Adkins

  • Franklin and Marshall College, Lancaster, Pennsylvania 17604

Richard N. Fell

  • Brandeis University, Waltham, Massachusetts 01742

J. Sapirstein

  • Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556

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Vol. 63, Iss. 3 — March 2001

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